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TABLE 11 <br /> ESTIMATED INHALATION CANCER RISKS FOR SOILS <br /> FORMER VERNALIS PUMP STATION <br /> Vernalis, San Joaquin and Stanislaus Counties, California <br /> COPC Cs(mg/kg) Cai,. (mg/m3) SFi Inhalation Risk <br /> BTEX <br /> Toluene 3.5E-02 9.7E-07 NA NA <br /> Eth lbenzene 5.0E-03 1.1E-07 8.7E-03 1.4E-10 <br /> Xylene(s) 4.2E-01 9.4E-06 NA NA <br /> PAHs <br /> Acenaphthene 5.0E-03 1.0E-08 NA NA <br /> Benzo(a)anthracene 5.7E-02 2.9E-09 3.9E-01 1.7E-10 <br /> Benzo(a)pyrene 8.1E-03 4.1E-10 3.9E+00 2.4E-10 <br /> Benzo b fluoranthene 8.3E-03 4.2E-10 3.9E-01 2.4E-11 <br /> Benzo ,h,i a lene 1.1E-02 5.5E-10 NA NA <br /> Benzo k fluoranthene 5.0E-03 2.5E-10 3.9E-01 1.5E-11 <br /> Ch Bene 8.6E-02 4.3E-09 3.9E-02 2.5E-11 <br /> Dibenz a,h anthracene 5.0E-03 2.5E-10 4.1E+00 1.5E-10 <br /> Fluoranthene 3.6E-02 1.8E-09 NA NA <br /> Fluorene 5.0E-03 1.8E-09 NA NA <br /> Indeno 1,2,3-cd rene 8.0E-03 4.0E-10 3.9E-01 2.3E-11 <br /> Naphthalene 1.1E+00 2.9E-06 1.2E-01 5.2E-08 <br /> Phenanthrene 7.6E-01 3.8E-08 NA NA <br /> Pyrene 5.9E-02 3.0E-09 NA NA <br /> Total Risk: 5.3E-08 <br /> Equation: <br /> Inhalation Risk=SFi x Cair x 0.149 <br /> Where: <br /> SFi=inhalation cancer slope factor,(mg/kg-day)_l <br /> Cair=concentration in air,mg/m3 <br /> Cs=concentration in soil,mg/kg <br /> (Note:Using the PEA Manual,the value for Cair is estimated using Figures 2.5,2.6,and 2.7 for <br /> VOCs and Figure 2.8 for non-VOCs.) <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> COPC=Constituent of potential concern <br /> mg/kg=Milligrams per kilogram <br /> mg/m3=Milligrams per cubic meter <br /> NA=Not applicable <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> Equation Source: <br /> PEA Manual,Figure 2.4. <br /> =A_IY The Benham Compa n ies,LLC <br /> A Wholly Owned Subsidiary <br /> Page 1 of 1 from svenco to soluhons <br />